Andrew H. Knoll
| Andrew Knoll | |
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| Born | 1951 (age 65–66) West Reading 
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| Scientific career | |
| Thesis | Studies in Archean and early Proterozoic paleontology (1977) |
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Andrew Herbert Knoll (born 1951) is the Fisher Professor of Natural History and a Professor of Earth and Planetary Sciences at Harvard University. Born in West Reading, Pennsylvania in 1951, Knoll graduated from Lehigh University with a bachelor of arts in 1973 and received his Ph.D. from Harvard University in 1977 for a dissertation entitled "Studies in Archean and Early Proterozoic Paleontology." Knoll taught at Oberlin College for five years before returning to Harvard as a professor in 1982. At Harvard, he serves in the departments of Organismic and Evolutionary Biology and Earth and Planetary Sciences.
Andrew Knoll is best known for his contributions to Precambrian paleontology and biogeochemistry. He has discovered microfossil records of early life in Spitsbergen, East Greenland, Siberia, China, Namibia, western North America, and Australia, and was among the first to apply principles of taphonomy and paleoecology to their interpretation. He has also elucidated early records of skeletonized animals in Namibia and remarkable fossils of the Ediacaran Doushantuo Formation, China, preserved in exceptional cellular detail by early diagenetic phosphate precipitation. Knoll and colleagues authored the first paper to demonstrate strong stratigraphic variation in the carbon isotopic composition of carbonates and organic matter preserved in Neoproterozoic (1000-542 million years ago) sedimentary rocks, and Knoll’s group also demonstrated that mid-Proterozoic carbonates display little isotopic variation through time, in contrast to both older and younger successions.
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